package com.example.oss;


import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.GetObjectRequest;
import java.io.File;

/**
 * 下载图片的功能
 */
public class Demo2 {
    private static final String endpoint = "https://oss-cn-beijing.aliyuncs.com";

    // 从环境变量或配置文件中获取AccessKey ID和AccessKey Secret
    private static final String accessKeyId = "LTAI5tN55tgyw956bJzemEZ6";
    private static final String accessKeySecret ="riKjI22au4JMf8R70QrxCfQDKdnGmk";
    public static void main(String[] args) throws Exception {

        // 填写Bucket名称，例如examplebucket。
        String bucketName = "ethereal";
        // 填写不包含Bucket名称在内的Object完整路径，例如testfolder/exampleobject.txt。
        String objectName = "images/test.png";
        String pathName = "D:\\test.png";

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 下载Object到本地文件，并保存到指定的本地路径中。如果指定的本地文件存在会覆盖，不存在则新建。
            // 如果未指定本地路径，则下载后的文件默认保存到示例程序所属项目对应本地路径中。
            ossClient.getObject(new GetObjectRequest(bucketName, objectName), new File(pathName));
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}